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| Class 363 | ELECTRIC POWER CONVERSION SYSTEMS |
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![[List of Pre Grant Publications for class 363 subclass 1]](../as.gif) | ![[List of Patents for class 363 subclass 1]](../ps.gif) | 1 | CASCADED OR COMBINED, DIVERSE CONVERSIONS IN WHICH THE FREQUENCY OR PHASE OR COMBINED CONVERSION IS WITHOUT INTERMEDIATE CONVERSION TO D.C. |
| | 2 |  Current and phase (e.g., D.C.-Ph1-Ph2) |
| | 8 | Current and frequency (e.g., f1-f2-D.C.) |
| | 9 | Combined phase and frequency conversion (i.e., Ph1f1-Ph2f2) |
| | 13 | CURRENT CONVERSION |
| | 14 | Cryogenic |
| | 15 | Including D.C.-A.C.-D.C. converter |
| | 16 |  Having transistorized inverter |
| | 17 |  Bridge type |
| | 18 | Single-ended, self-oscillating type |
| | 20 | Single-ended, separately-driven type |
| | 21.01 |  With automatic control of the magnitude of output voltage or current |
| | 21.02 |  For resonant-type converter |
| | 21.04 | For forward-type converter |
| | 21.05 |  Having digital logic |
| | 21.06 | Having synchronous rectifier |
| | 21.07 | Having feedback isolation (e.g., optoisolator, transformer coupled, etc.) |
| | 21.08 | Having feedback winding inductively coupled to inverter inductive device (e.g., tertiary winding, etc.) |
| | 21.09 | Having output current feedback |
| | 21.1 | Utilizing pulse-width modulation |
| | 21.12 | For flyback-type converter |
| | 21.13 | Having digital logic |
| | 21.14 | Having synchronous rectifier |
| | 21.15 | Having feedback isolation (e.g., optoisolator, transformer coupled, etc.) |
| | 21.16 | Having feedback winding inductively coupled to inverter inductive device (e.g., tertiary winding, etc.) |
| | 21.17 | Having output current feedback |
| | 21.18 | Utilizing pulse-width modulation |
| | 22 | Double-ended (i.e., push-pull), self-oscillating type |
| | 24 | Double-ended (i.e., push-pull), separately-driven type |
| | 27 | Having thyristor inverter (e.g., SCR, etc.) |
| | 29 | Having electron-tube inverter |
| | 32 | Rotary-commutator-type inverter |
| | 33 | Vibrator-type inverter |
| | 34 | Including an A.C.-D.C.-A.C. converter |
| | 35 | For transfer of power via a high voltage D.C. link (i.e., HVDC transmission system) |
| | 36 | For change of phase (e.g., number of phases) |
| | 37 | By semiconductor rectifier and inverter |
| | 38 | By electron tube rectifier and inverter |
| | 39 | With means to introduce or eliminate frequency components |
| | 40 | In inverter systems |
| | 41 | By pulse modulation technique (e.g., PWM, PPM, etc.) |
| | 43 | By step-wave, amplitude summation technique |
| | 44 | In rectifier systems |
| | 49 | With starting arrangement |
| | 50 | Including automatic or integral protection means |
| | 51 | For high voltage D.C. transmission systems |
| | 52 | For rectifiers |
| | 55 | For inverters |
| | 56.01 | Transistor inverter |
| | 56.02 | Bridge type |
| | 56.03 | Having current protection (e.g., over current, short, etc.) |
| | 56.04 | Including short protection across a series-connected pair of transistors (e.g., shoot-through protection, etc.) |
| | 56.05 | Having voltage protection |
| | 56.06 | Double-ended type |
| | 56.09 | Single-ended type |
| | 56.12 | Transient protection (e.g., snubber, etc.) |
| | 57 | Thyristor inverter |
| | 59 | With voltage multiplication means (i.e., V out > V in) |
| | 62 | With voltage division by storage type impedance (i.e., V out) |
| | 63 | With means to selectively provide D.C. of either polarity |
| | 64 | With interphase transformer |
| | 65 | Having plural converters for single conversion |
| | 66 | Including plural anodes and single cathode (e.g., vapor arc device) |
| | 67 | Plural rectifiers |
| | 71 | Plural inverters |
| | 73 | Constant current to constant voltage or vice versa |
| | 74 | With condition responsive means to control the output voltage or current |
| | 75 | Including inductive integral sensing and control means (e.g., ferroresonant circuit) |
| | 76 | Including integral sensing and control means for rectifier |
| | 78 | Cooperating separate sensing and control means |
